Electric fan



FIG. 1 is a front right perspective view of the electric fan showing the new design;

FIG. 2 is a back left elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a back elevation thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a right plan view thereof,

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for an electric fan, as shown and described. 